Furnace Repair and Maintenance
Furnace Repair & Maintenance London Ontario
Same-day furnace repair and annual maintenance across all London Ontario neighbourhoods. TSSA certified gas technician. Diagnostic fee applied to repair cost when you proceed. 24/7 emergency with no overtime surcharge. All major brands serviced.
Furnace Problems Hawana Fixes Same-Day in London Ontario
Most furnace failures in London Ontario come down to a small number of components. Here is exactly what Hawana finds and fixes most often.
Failed Igniter
The most common single cause of no-heat in London Ontario. The igniter glows orange-hot to light the gas burner. When it fails, the furnace attempts to start 1 to 3 times, then locks out and displays an ignition failure code. Parts stocked for all major brands on every truck.
Under 1 hour. $280–$450 installed. Part stocked for Carrier, Lennox, Goodman, Trane, Bryant, York.
Dirty or Failed Flame Sensor
The flame sensor confirms the burner ignited. A dirty sensor causes the furnace to light, run for 2 to 5 seconds, shut off the gas, and retry — eventually locking out. Often cleanable rather than replaceable. Carbon buildup on the sensor tip is the typical cause after several years of operation.
30 to 60 minutes. Cleaning: $200–$300. Replacement: $280–$400. Furnace running again same visit.
Pressure Switch Fault
Pressure switches confirm the inducer motor is creating proper draft before allowing gas to open. Most common cause in London Ontario: a blocked condensate drain on 90%+ efficiency furnaces. The pressure switch float shuts down the furnace when the drain overflows. Check your condensate drain first.
High-efficiency furnace? Check the white PVC condensate drain line for blockage. Clear it and try restarting. If error repeats, call (647) 550-4220.
High-Limit Switch Tripped
The high-limit safety switch shuts the furnace down if the heat exchanger overheats. Most common cause: a severely clogged air filter restricting airflow, causing heat to build up. Replace your air filter now and allow 15 minutes before restarting. If the furnace keeps tripping, the limit switch or blower motor may have failed.
Replace air filter. Allow 15 minutes. Try restarting. If furnace short-cycles again, call Hawana for diagnosis.
Control Board Failure
The control board manages ignition sequencing, safety monitoring, and error codes. A failed board may show random lockouts, specific component failure codes, or cause no response at all. Common boards stocked for Goodman, Lennox, Carrier, Trane, and Bryant. Note the error code before calling — it speeds diagnosis.
$600–$1,100 installed. Note the exact error code from the control board LED before calling — it helps pre-load the right part.
Cracked Heat Exchanger
A cracked heat exchanger is a carbon monoxide safety issue — combustion gases can mix with circulated air. Symptoms include short cycling, an unusual smell when the furnace runs, and CO detector alerts. If diagnosed, the furnace must be replaced. Hawana inspects the heat exchanger on every maintenance call and condemns confirmed cracks in writing.
Working CO detectors on every floor are essential. A cracked heat exchanger is a replacement situation — Hawana provides honest written guidance.
Furnace Repair & Maintenance Cost London Ontario 2026
Diagnostic fee applied to repair cost when you proceed. Written quote after diagnosis — before any repair begins. Same pricing 24/7.
Annual Maintenance
Diagnostic & Common Repairs
Major Component Repairs
All prices in CAD, include parts and labour. Diagnostic fee applied to repair cost when you proceed. Written quote before work begins. Same pricing 24/7.
Carbon Monoxide Safety — What Every London Ontario Homeowner Must Know
Carbon monoxide (CO) is odourless and colourless — you cannot smell, see, or taste it. A cracked heat exchanger in your furnace can allow CO to enter your home’s circulated air without any obvious warning. CO poisoning symptoms (headache, dizziness, nausea) are often mistaken for the flu.
- 1. Leave the house immediately
- 2. Do not operate any switches
- 3. Call 911 from outside
- 4. Do not re-enter until cleared
- 5. Call Hawana once cleared: (647) 550-4220
- ✓ Required on every floor with a bedroom
- ✓ Required adjacent to all sleeping areas
- ✓ Required near any gas appliance
- ✓ Replace detector every 5–7 years
- ✓ Test monthly with test button
Hawana performs a combustion analysis and CO test on every annual maintenance visit and every furnace repair call involving the heat exchanger. This is why annual furnace maintenance is not just about efficiency — it is a critical safety check. A $149 tune-up that catches a developing heat exchanger crack protects your family.
What Hawana’s Annual Furnace Tune-Up Includes
12-point inspection covering every major safety and efficiency check point. Written service report provided after every maintenance visit.
12-Point Annual Furnace Tune-Up — London Ontario
📋 Written service report and findings provided after every maintenance visit. Hawana maintenance plan members receive priority emergency dispatch and 15% off any repair that arises during or after the maintenance visit.
Basic vs Premium Maintenance Plan — Which Is Right for Your London Ontario Home?
- ✓Annual 12-point furnace tune-up
- ✓Combustion analysis + CO test
- ✓Flame sensor cleaning
- ✓Written service report
- ✓15% off any repairs found
- ✓Everything in Basic Plan
- ✓Priority emergency dispatch — you go to the front of the queue
- ✓Annual spring AC tune-up included
- ✓Filter provided and replaced on visit
- ✓15% off any repairs found
Air Filter MERV Rating Guide — What to Buy and How Often to Replace
Your air filter is the single highest-impact DIY maintenance task for your London Ontario furnace. The wrong filter — or a clogged one — is responsible for more furnace service calls than any other user-controlled factor.
🔥 Important for London Ontario homes: Always replace more frequently if you have pets, live near construction, or run the furnace fan continuously. Check the filter monthly — if it is grey and you can no longer see through it, replace it regardless of the schedule above. A clogged filter is the leading cause of furnace high-limit faults and the most preventable service call.
Quick Checks Before Calling Hawana for Furnace Repair
Some furnace problems are simple to resolve without a service call. Check these first.
Thermostat
Set to HEAT, fan AUTO, temperature above current room temp. Replace batteries — dead batteries are responsible for more no-heat calls than you would expect.
Power Switch & Breaker
Find the furnace power switch (looks like a light switch on or near the furnace). Confirm ON. Check the furnace circuit breaker — reset if tripped.
Air Filter
Replace a clogged filter. A dirty filter triggers the high-limit switch and shuts the furnace down. Allow 15 minutes before restarting.
Condensate Drain
If you have a 90%+ efficiency furnace, check the PVC condensate drain line for blockage. Clear it if clogged and try restarting.
Error Code
Note the blinking LED pattern on the control board (visible through the sight window). Count blinks, check the chart on the furnace door. Write it down.
Call Hawana
Call (647) 550-4220. Same-day service. 24/7 with no overtime charge. Tell us the error code if you found one.
Abdullah Ghzail — Lead HVAC Technician & Founder
Abdullah has diagnosed and repaired gas furnaces across London Ontario since founding Hawana in 2021. Fully TSSA certified, he carries igniters, flame sensors, pressure switches, and control boards for all major brands on every service truck. He reads error codes on the first visit, identifies root causes rather than obvious symptoms, and provides honest repair vs replace guidance with real numbers. He performs a combustion analysis and CO test at every maintenance and repair call involving the heat exchanger — the most important safety check in furnace service. Heat exchanger cracks are condemned in writing every time.
Furnace Repair & Maintenance Reviews — London Ontario
5.0 stars · 139 Google reviews · Read all reviews ↗
“Called Hawana at 9am when our Byron furnace stopped heating in January. Technician arrived by 11:30am, diagnosed a failed igniter, had the part on the truck, and heat was back on by 1pm. Diagnostic fee applied directly to the repair. No overtime charge even though it was a Sunday. Exactly the kind of service you hope to find.”
“Hawana came out for our annual furnace tune-up in October. Abdullah did a full combustion analysis — something our previous HVAC company never mentioned, let alone did. He found our flame sensor was building up carbon and cleaned it on the spot. Written service report provided. This is what proper furnace maintenance looks like.”
“Our Lennox furnace was 19 years old and threw a control board error. Hawana gave us a straight comparison: $700 repair on a 19-year-old unit with an aging heat exchanger, vs $4,200 for a new Goodman with full warranty. We replaced it. The honesty about the risk of further failures on the old unit rather than just taking the repair money is exactly what you want from an HVAC company.”
Furnace Repair & Maintenance London Ontario — FAQ
How much does furnace repair cost in London Ontario?
Is same-day furnace repair available in London Ontario?
Why is my furnace not heating my London Ontario home?
How often should I service my furnace in London Ontario?
What is a combustion analysis and why does it matter?
What does the annual furnace tune-up include?
When should I repair vs replace my furnace in London Ontario?
Why is my furnace making a banging noise?
Does Hawana service all furnace brands in London Ontario?
What neighbourhoods does Hawana serve for furnace repair in London Ontario?
Furnace Repair Service Areas — London Ontario
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Same-day service. 24/7 emergency with no overtime. Diagnostic applied to repair. Written quote before any work. TSSA certified gas technician.
Diagnostic applied to repair · Written quote first · TSSA certified · No overtime · 30-day guarantee